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M7.2 Pulo Kunji
Aftershock, 2004 |
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Date: |
26
December 2004 |
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Epicentre: |
W of Pulo Kunji, Great Nicobar Island |
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Time: |
04:21:29
UTC (09:51:29 IST)
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Latitude: |
06.910 N (NEIC) |
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Longitude: |
92.960 E (NEIC) |
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Depth: |
39.0 kms (NEIC) |
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Magnitude: |
Mw
7.2 (HRV);
Ms
7.5 (NEIC). |
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A major earthquake struck the
Nicobar Islands to the west of Pulo Kunji on Great Nicobar Island, on
26 December 2004 at 09:51 AM local time. It had a magnitude of
Mw=7.2 and was one the strongest aftershocks within 24-hours of the
Sumatra-Andaman earthquake.
The earthquake
was centred
80 kms
WSW
of Pulo Kunji (Great Nicobar Island), India,
84.6 kms SW of Edinburgh Point (Little Nicobar
Island), India,
106 W of Campbell Bay (Great Nicobar Island), India,
120 kms SSW of West Bay (Katchall Island), India,
252 kms S of Malacca (Car Nicobar Island), India,
302 kms NW of Banda Aceh (Aceh, Sumatra), Indonesia,
531 kms S of Port Blair (South Andaman Island), India.
This earthquake
was one of the strongest
aftershocks to occur in the
Andaman & Nicobar archipelago in the wake
of the 2004 Sumatra-Andaman earthquake and occurred within 4-hours
of the mainshock. Tremors from the
earthquake were felt
at Georgetown in
Malaysia and at Phuket in Thailand. No felt effects were available
from the Nicobar Islands or adjoining parts of Sumatra nor were any
effects reported from southern India.Other large aftershocks within
a week of 26 December included one off Car Nicobar on 26 December at
9:20 UTC
that
had a magnitude of Mw=6.9 (IMD; Mw=6.6 by HRV) and off the west
coast of Aceh on 1 January 2005 at 6:25 UTC that had a magnitude of
Mw=6.6. The latter was felt by people in tall buildings in Chennai,
Tamil Nadu. |
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References
01)
National
Earthquake Information Centre (NEIC), Golden, USA.
02)
India
Meteorological Department (IMD), Delhi.
03)
Harvard Centroid Moment Tensor Solution (HRV), Harvard, USA.
04)
Macroseismic information has been compiled by
the ASC from reports by local media and local NGO personnel.
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Map Disclaimer
International boundaries
of India (especially Arunachal Pradesh, Jammu & Kashmir, Himachal Pradesh and Uttarakhand) on the
displayed map are from Google Maps. These do not conform to the
external boundaries of India recognized by the Survey of India. That
they are displayed on this page via Google Maps, is only for display purposes and
this should not be misinterpreted as an endorsement
of these boundaries by the Amateur Seismic Centre (ASC). |
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